不同浓度的碳二亚胺乙醇溶液处理对牙本质自酸蚀粘接剂粘接强度的影响

发布时间：2018-03-23 05:41

  本文选题：酸蚀　切入点：牙　出处：《北京大学学报(医学版)》2017年06期 　论文类型：期刊论文

【摘要】：目的:采用微剪切方法分析不同浓度碳二亚胺[1-ethyl-3-(3-dimethylaminopropyl)carbodiimide,EDC]乙醇溶液处理牙本质表面对自酸蚀粘接剂粘接强度和断裂模式的影响。方法:收集离体健康智齿80颗,随机分为5组,每组16颗。低速切割机暴露牙合面中层牙本质后使用两步法自酸蚀粘接剂(Clearfil SE Bond)进行牙本质粘接,所有试件设计为粘接半径1 mm、高3 mm的树脂柱试件。粘接时除空白组按常规步骤完成粘接外,其余4组在Ⅰ液(底涂剂)处理后,分别采用3种浓度(0.01 mol/L、0.3 mol/L、0.5 mol/L)的EDC乙醇溶液和乙醇溶剂对牙本质表面处理1 min后涂布Ⅱ液(粘接剂)完成粘接。将所有试件放入含0.5%(质量分数)氯胺T生理盐水浸泡24 h后进行微剪切实验,并在体式显微镜下观察试件断裂模式。结果:0.01 mol/L、0.3 mol/L、0.5 mol/L EDC处理组、乙醇溶剂处理组的即刻微剪切粘接强度分别为(35.29±8.97)MPa、(40.24±9.68)MPa、(37.38±9.66)MPa、(37.49±7.76)MPa,高于空白组(33.81±7.98)MPa,各组差异均无统计学意义(P0.05);断裂模式在各组间差异也无统计学意义(P0.05)。结论:不同浓度的EDC乙醇溶液处理对牙本质自酸蚀粘接剂的即刻粘接强度、断裂模式没有影响。
[Abstract]:Objective: to analyze the effect of ethanol solution treatment of different concentrations of 1-ethyl-3-dimethylaminopropylcarbodiimide EDC (EDC) on the adhesive strength and fracture mode of self-etching adhesive. Methods: 80 healthy healthy teeth were collected and randomly divided into 5 groups. 16 in each group. After exposure to the middle dentin of the occlusal surface, a two-step self-etching adhesive (Clearfil SE Bond) was used for dentin bonding. All specimens were designed to be resin column specimens with a adhesive radius of 1 mm and a height of 3 mm. In addition to the blank group, the other 4 groups were treated with liquid I (bottom coating), except for the blank group. Three different concentrations of 0. 1 mol / L ~ 0. 3 mol / L ~ (0.5 mol / L) EDC ethanol solution and ethanol solvent were used to treat dentin surface for 1 min and then coated with 鈪，

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